<script setup>
import { userLoginService, userRegisterService } from '@/api/user';
import { ref, watch } from 'vue';
import { User, Lock } from '@element-plus/icons-vue'
import { useUserStore } from '@/stores';
import { useRouter } from 'vue-router';


// 是否注册
const isRegister = ref(false)

const formModel = ref({
    username: '',
    password: '',
    repassword: ''
})

const rules = {
    username: [
        {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
        },
        {
            min: 5,
            max: 10,
            message: '用户名必须是5-10位的字符',
            trigger: 'blur'
        }
    ],
    password: [
        {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
        },
        {
            pattern: /^\S{6,15}$/,
            message: '密码必须是6-15位的非空字符',
            trigger: 'blur'
        }
    ],
    repassword: [
        {
            required: true,
            message: '请再次输入密码',
            trigger: 'blur'
        },
        {
            pattern: /^\S{6,15}$/,
            message: '密码必须是6-15的非空字符',
            trigger: 'blur'
        },
        {
            validator: (rule, value, callback) => {
                if (value !== formModel.value.password) {
                    callback(new Error('两次输入密码不一致!'))
                } else {
                    callback()
                }
            },
            trigger: 'blur'
        }
    ]
}

const form = ref()

const register = async () => {
    // 注册成功之前，先进行校验，校验成功 → 请求，校验失败 → 自动提示
    await form.value.validate()
    await userRegisterService(formModel.value)
    ElMessage.success('注册成功')
    isRegister.value = false
}

watch(isRegister,() => {
    formModel.value = {
    username: '',
    password: '',
    repassword: ''
  }
})

const userStore = useUserStore()
const router = useRouter()
const login = async () => {
    // 先执行rules中的校验
    await form.value.validate()
    const res = await userLoginService(formModel.value)
    userStore.setToken(res.data.token)
    ElMessage.success('登录成功')
    router.push('/')
}


</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>

        <el-col :span="6" :offset="3" class="form">
            <el-form ref="form" :model="formModel" :rules="rules" size="large" autocomplete="off" v-if="isRegister">
                <el-form-item>
                    <h1 class="title">注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" v-model="formModel.username" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" v-model="formModel.password" type="password"
                        placeholder="请输入密码"></el-input>
                </el-form-item>
                <el-form-item prop="repassword">
                    <el-input :prefix-icon="Lock" v-model="formModel.repassword" type="password"
                        placeholder="请输入再次密码"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button @click="register" class="button" type="primary" auto-insert-space>
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <el-form ref="form" :model="formModel" :rules="rules" size="large" autocomplete="off" v-else>
                <el-form-item>
                    <h1 class="title">登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" v-model="formModel.username" placeholder="请输入用户名"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" v-model="formModel.password" type="password" placeholder="请输入密码"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <el-form-item>
                    <el-button @click="login" class="button" type="primary" auto-insert-space>登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>